<!DOCTYPE html>
<script>
    if (window.testRunner)
        testRunner.dumpAsText();
</script>
<link rel=preload href="resources/empty.html">
<link rel=preload href="resources/empty.html" as="document">
<link rel=preload href="../../../media/content/test.mp4" as="audio">
<link rel=preload href="../../../media/content/test.wav" as="video">
<!--This test verifies that specific warnings are shown when preload
    resources use unsupported (but valid) destinations. -->
